In TRef::GetObject protect against the case where fPID points to a deleted processID using the new function TProcessID::IsValid.
In TRef::GetObject protect against the case where fPID points to
a deleted processID using the new function TProcessID::IsValid.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@5761 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,bbannier/ROOT,bbannier/ROOT,dawehner/root,dawehner/root